X-Git-Url: https://git.proxmox.com/?p=mirror_edk2.git;a=blobdiff_plain;f=Vlv2TbltDevicePkg%2FInclude%2FProtocol%2FI2cAcpi.h;fp=Vlv2TbltDevicePkg%2FInclude%2FProtocol%2FI2cAcpi.h;h=14a0b7079e52dbea5765fdf30e2d7b61b4445035;hp=0000000000000000000000000000000000000000;hb=3cbfba02fef9dae07a041fdbf2e89611d72d6f90;hpb=6f785cfcc304c48ec04e542ee429df95e7b51bc5

diff --git a/Vlv2TbltDevicePkg/Include/Protocol/I2cAcpi.h b/Vlv2TbltDevicePkg/Include/Protocol/I2cAcpi.h
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+++ b/Vlv2TbltDevicePkg/Include/Protocol/I2cAcpi.h
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+/*++
+
+  Copyright (c) 2004  - 2014, Intel Corporation. All rights reserved.<BR>
+                                                                                   

+  This program and the accompanying materials are licensed and made available under

+  the terms and conditions of the BSD License that accompanies this distribution.  

+  The full text of the license may be found at                                     

+  http://opensource.org/licenses/bsd-license.php.                                  

+                                                                                   

+  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,            

+  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.    

+                                                                                   

+
+
+**/
+
+#ifndef __I2C_ACPI_H__
+#define __I2C_ACPI_H__
+
+#include <Protocol/DevicePath.h>
+
+//
+// I2C ACPI protocol
+//
+typedef struct _EFI_I2C_ACPI_PROTOCOL   EFI_I2C_ACPI_PROTOCOL;
+
+//
+// I2C device description
+//
+// This structure provides the platform specific information which
+// describes an I2C device.
+//
+typedef struct {
+  //
+  // Hardware revision - ACPI _HRV value
+  //
+  UINT32 HardwareRevision;
+
+  //
+  // Device path node for the I2C device.
+  //
+  CONST EFI_DEVICE_PATH_PROTOCOL *DevicePath;
+
+  //
+  // I2C bus configuration for the I2C device.
+  //
+  UINT32 I2cBusConfiguration;
+
+  //
+  // Number of slave addresses for the I2C device.
+  //
+  UINT32 SlaveAddressCount;
+
+  //
+  // Address of the array of slave addresses for the I2C device.
+  //
+  CONST UINT32 *SlaveAddressArray;
+}EFI_I2C_DEVICE;
+
+
+/**
+  Enumerate the I2C devices
+
+  This routine must be called at or below TPL_NOTIFY.
+
+  This function walks the platform specific data to enumerates the
+  I2C devices on an I2C bus.
+
+  @param[in]  This              Address of an EFI_I2C_ENUM_PROTOCOL
+                                structure.
+  @param[in, out] Device        Buffer containing the address of an
+                                EFI_I2C_DEVICE structure.  Enumeration
+                                is started by setting the initial
+                                EFI_I2C_DEVICE structure address to NULL.
+                                The buffer receives an EFI_I2C_DEVICE
+                                structure address for the next I2C device.
+
+  @retval EFI_SUCCESS           The platform data for the next device
+                                on the I2C bus was returned successfully.
+  @retval EFI_INVALID_PARAMETER NextDevice was NULL
+  @retval EFI_NO_MAPPING        PreviousDevice does not point to a valid
+                                EFI_I2C_DEVICE structure.
+
+**/
+typedef
+EFI_STATUS
+(EFIAPI *EFI_I2C_ACPI_ENUMERATE) (
+  IN CONST EFI_I2C_ACPI_PROTOCOL *This,
+  IN OUT CONST EFI_I2C_DEVICE **Device
+  );
+
+//
+// I2C device description
+//
+// This structure provides the platform specific information which
+// describes an I2C device.
+//
+struct _EFI_I2C_ACPI_PROTOCOL {
+  //
+  // Walk the platform's list of I2C devices on the bus.  This
+  // routine returns the next I2C device in the platform's list
+  // for this I2C bus.
+  //
+  EFI_I2C_ACPI_ENUMERATE Enumerate;
+};
+
+//
+// Variable containing the GUID for the I2C device enumeration protocol
+//
+extern EFI_GUID gEfiI2cAcpiProtocolGuid;
+
+#endif  //  __I2C_ACPI_H__